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1. A cannon fires a cannonball with the initial velocity of 30 m/s at an angle of 60
degrees to the horizontal. If air resistance is negligible, the amount of time the
cannonball remains in the air is
a. 2.6 s
b. 3.0 s
C. 5.2 s
d. 6.Os
2. An object is thrown off of a cliff 320 m above level ground with an initial horizontal
velocity of 20 m/s. The amount of time it takes to strike the ground is most nearly.
a. 2 s
b. 4 s
c. 8 s
d. 12 s
3.A basketball is thrown upwards on an are at a 60 degree angle with the horizontal.
If the velocity of the ball is 5 m/s how fast the thrower run to catch the ball after it is
released?
a. 2.5 m/s
b. 5.0 m/s
c. 20 m/s
d. 4.3 m/s
1​


Sagot :

Answer:

1(B)

2(A)

3(D)

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